ONENNasdaqElectric ServicesFiscal year ends December 31
ONE Nuclear Energy Inc.
Financials through fiscal 2026, year ended Dec 31, 2026Last filing: 10-Q on Aug 12, 2026
$1.39−0.13 (-8.55%)
Close on Oct 19, 2026
- Market cap
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- P/E (TTM)
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- Dividend yield
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Ownership
Who owns ONE Nuclear Energy's shares
Held by institutions
–
Shares held, 13F filers
Institutional holders
–
Net institutional buying
–
Insider trades, 12 months
0 buys · 0 sales
Open-market trades only
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Glazer Capital, LLC | 999,993 | 5.08% | 13G (passive) | Jun 30, 2026 |
| Hennessy Thomas D | 6,453,333 | 25.20% | 13G (passive) | Mar 31, 2025 |
| Tenor Capital Management Company, L.P. | 1,500,000 | 8.60% | 13G (passive) | Jan 17, 2025 |
| Highbridge Capital Management, LLC | 1,500,000 | 7.60% | 13G (passive) | Dec 31, 2025 |
| Siu Min Wong | 1,463,732 | 7.40% | 13G (passive) amendment | Dec 31, 2025 |
| Aaron Diamond | 1,222,740 | 6.21% | 13G (passive) | Dec 31, 2025 |
| North Rock Capital Management, LLC | 1,222,740 | 6.21% | 13G (passive) | Mar 31, 2026 |
| Berkley Insurance Company | 1,101,473 | 5.60% | 13G (passive) | Jun 30, 2026 |
| AQR Capital Management Holdings, LLC | 1,059,589 | 5.38% | 13G (passive) amendment | Dec 31, 2025 |
| Fort Baker Capital Management LP | 1,008,922 | 5.10% | 13G (passive) | Sep 30, 2025 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Robert Carilli | Chief Strategy Officer, Director, 10% owner | 30,237,851 | 116.20% | Sep 25, 2026 |
| Kevin Francis Dowd | Chief Operating Officer, Director, 10% owner | 30,237,852 | 116.20% | Sep 25, 2026 |
| Richard David Taylor | Chief Executive Officer, Director, 10% owner | 30,237,851 | 116.20% | Sep 25, 2026 |
| Ann T. Anthony | Chief Financial Officer | – | – | Sep 25, 2026 |
| Elizabeth Suzanne Williams | Director | – | – | Sep 25, 2026 |
| Kyle Bradford Crowley | Director | – | – | Sep 25, 2026 |
| Daniel J. Hennessy | Director | 5,703,333 | 21.92% | Sep 23, 2026 |
| Anna S. Brunelle | – | 25,000 | 0.10% | Sep 23, 2026 |
| Grant R. Allen | – | 25,000 | 0.10% | Sep 23, 2026 |
| Thomas D. Hennessy | – | 12,198,332 | 46.87% | Sep 23, 2026 |
| Javier Saade | – | 25,000 | 0.10% | Sep 23, 2026 |
| Poonam Sharma Mathis | – | 30,000 | 0.12% | Sep 23, 2026 |
| Brian Bonner | – | 25,000 | 0.10% | Sep 23, 2026 |
| Nicholas Boris Geeza | – | 250,000 | 0.96% | Sep 23, 2026 |
| Capital Group LLC Hennessy | – | 5,703,333 | 21.92% | Sep 23, 2026 |
| VII Sponsor LLC HC | – | – | – | Sep 23, 2026 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Thomas D. Hennessy – | Sep 23, 2026 | Option exercise | +750,000 | – | – | 750,000 |
| Thomas D. Hennessy – | Sep 23, 2026 | Option exercise | +41,666 | – | – | 5,744,999 |
| Thomas D. Hennessy – | Sep 23, 2026 | Option exercise | +5,203,333 | – | – | 5,703,333 |
| Grant R. Allen – | Sep 23, 2026 | Option exercise | +25,000 | – | – | 25,000 |
| Anna S. Brunelle – | Sep 23, 2026 | Option exercise | +25,000 | – | – | 25,000 |
| Capital Group LLC Hennessy – | Sep 23, 2026 | Option exercise | +5,203,333 | – | – | 5,703,333 |
| Capital Group LLC Hennessy – | Sep 23, 2026 | Option exercise | +41,666 | – | – | 5,744,999 |
| Daniel J. Hennessy Director | Sep 23, 2026 | Option exercise | +5,203,333 | – | – | 5,703,333 |
| Daniel J. Hennessy Director | Sep 23, 2026 | Option exercise | +41,666 | – | – | 5,744,999 |
| Nicholas Boris Geeza – | Sep 23, 2026 | Option exercise | +250,000 | – | – | 250,000 |
| Brian Bonner – | Sep 23, 2026 | Option exercise | +25,000 | – | – | 25,000 |
| Poonam Sharma Mathis – | Sep 23, 2026 | Option exercise | +30,000 | – | – | 30,000 |
| Javier Saade – | Sep 23, 2026 | Option exercise | +25,000 | – | – | 25,000 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.